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A universal mount is able to accommodate mobile hand-holdable electronic
devices of various sizes having a device lower edge spaced from a device
upper edge. The universal mount has a housing sub-assembly having a
housing sub-assembly base-plate with a lower mount attached thereto and
configured to releaseably receive the device lower edge. A movable
latch-plate sub-assembly, having an upper mount attached thereto, is
disposed in and slideably attached to the housing sub-assembly. The upper
mount, aligned with the lower mount at an adjustable position above and
relative to the lower mount, is configured to releaseably receive the
device upper edge. A support-plate sub-assembly is fixedly disposed in
the housing. The movable latch-plate sub-assembly is slideably attached
to the support-plate sub-assembly. A back-plate sub-assembly is attached
to the housing sub-assembly and encloses the movable latch-plate
sub-assembly and the support-plate sub-assembly in the housing
sub-assembly.

1. A universal mount able to accommodate mobile hand-holdable electronic
devices of various sizes having a device lower edge spaced from a device
upper edge, the universal mount comprising: a housing sub-assembly having
a housing sub-assembly base-plate with a lower mount attached thereto,
the lower mount configured to releaseably receive the device lower edge;
a movable latch-plate sub-assembly disposed in and slideably attached to
the housing sub-assembly, the movable latch-plate sub-assembly having an
upper mount attached thereto, the upper mount aligned with the lower
mount at a position above the lower mount and configured to releaseably
receive the device upper edge, the position of the upper mount being
adjustable relative to the lower mount to accommodate mobile
hand-holdable electronic devices of various sizes; a support-plate
sub-assembly fixedly disposed in the housing sub-assembly, the movable
latch-plate sub-assembly slideably attached to the support-plate
sub-assembly; and a back-plate sub-assembly attached to the housing
sub-assembly and enclosing the movable latch-plate sub-assembly and the
support-plate sub-assembly in the housing sub-assembly.

2. The universal mount according to claim 1, wherein the housing
sub-assembly further comprises: a first housing sub-assembly side plate
and a second housing sub-assembly side plate spaced from the first
housing sub-assembly side plate, the first and second housing
sub-assembly side plates having a length L.sub.1 and extending upwardly
from the housing base-plate to a housing top-plate extending from the
first housing sub-assembly side plate to the second housing sub-assembly
side plate; a housing sub-assembly front-plate extending from the first
housing sub-assembly side plate to the second housing sub-assembly side
plate and upwardly from the housing sub-assembly base-plate a length
L.sub.2 less than the length L.sub.1; and a housing sub-assembly opening
in the housing sub-assembly between the housing sub-assembly top-plate
and the housing sub-assembly front-plate having a length L.sub.3 within
which the position of the movable-plate sub-assembly is adjustable.

3. The universal mount according to claim 2, wherein the multi-plate
housing sub-assembly is injection molded as a single integrated piece.

4. The universal mount according to claim 1, wherein the movable
latch-plate sub-assembly further comprises: a movable latch-plate
sub-assembly rail positioned along a right edge of a rearwardly facing
surface of the movable latch-plate sub-assembly, the movable latch-plate
sub-assembly rail extending rearwardly and configured as a rack having
gear teeth on an inwardly facing rack surface; and wherein the
support-plate sub-assembly comprises: a forwardly facing support-plate
sub-assembly surface; a support-plate shaft extending inwardly from the
forwardly facing support-plate sub-assembly surface, and a support-plate
sub-assembly gear wheel rotatably mounted on the support-plate
sub-assembly shaft and engaging the gear teeth of the rack on the
rearwardly facing surface of the movable latch-plate sub-assembly.

5. The universal mount according to claim 1, wherein the movable
latch-plate sub-assembly comprises: a movable latch-plate sub-assembly
bar spaced from the left edge of a rearwardly facing surface of the
movable latch-plate sub-assembly, the movable latch-plate sub-assembly
bar extending rearwardly and configured as a ratchet bar with serrated
teeth on an outwardly facing ratchet bar surface, and wherein the
support-plate sub-assembly comprises: a support-plate sub-assembly pawl
which engages the serrated teeth of the ratchet bar on the rearwardly
facing surface of the latch-plate sub-assembly permitting movement of the
movable latch-plate sub-assembly in one direction and preventing movement
of the movable latch-plate sub-assembly in the opposite direction.

6. The universal mount according to claim 5, wherein the pawl comprises:
a pivoting catch having an catch edge at a first pawl end configured and
positioned to engage the serrated teeth of the ratchet bar and a pawl
release button at a second pawl end.

7. The universal mount according to claim 1, wherein the movable
latch-plate sub-assembly comprises: a rearwardly facing movable
latch-plate sub-assembly surface having a centrally-positioned
downwardly-extending movable latch-plate sub-assembly first slot spaced
apart from a centrally-positioned downwardly-extending movable
latch-plate sub-assembly second slot; and a movable latch-plate
sub-assembly rod disposed between the movable latch-plate sub-assembly
first and second spaced-apart slots, the movable latch-plate sub-assembly
rod extending downwardly substantially a movable latch-plate slot length
and terminating in a movable latch-plate sub-assembly rod compression
spring mount, and wherein the support-plate sub-assembly comprises: a
generally U-shaped support-plate sub-assembly channel having spaced-apart
first and second channel arms slideably disposed in the movable
latch-plate sub-assembly first and second spaced-apart slots; a movable
latch-plate sub-assembly compression spring disposed in the support-plate
sub-assembly channel having a first compression spring end coupled to the
movable latch-plate sub-assembly rod compression spring mount and a
second compression spring end attached to and supported by the housing
base plate, the movable latch-plate sub-assembly compression spring
upwardly biasing the upper mount away from the lower mount.

8. The universal mount according to claim 1, wherein the housing
sub-assembly further comprises: a first recess in the first housing
sub-assembly side plate; a second recess in the second housing
sub-assembly side plate; an intermediate mount positioned between the
lower mount and the upper mount, the intermediate mount comprising: a
first extendable arm stowed in the first recess and pivotably attached to
the first housing sub-assembly side plate; and a second extendable arm
stowed in the second recess and pivotably attached to the second housing
sub-assembly side plate, the first and second extendable anus are
configured to releaseably receive the device lower edge when the first
and second extendable arms are in an extended position.

9. The universal mount according to claim 2, wherein the housing
sub-assembly further comprises a cold shoe on at least one of the first
housing sub-assembly side plate, the a second housing sub-assembly side
plate and the housing sub-assembly top plate, the cold shoe configured to
mount a peripheral device.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of priority under 35 USC .sctn.
119(e) of U.S. Provisional Patent Application No. 62/420,171 filed Nov.
10, 2016, the contents of which are incorporated herein by reference.

[0003] Mobile hand-holdable electronic devices are microprocessor-enabled
electronic devices, which are generally small enough to be carried around
by hand. Commonly used mobile hand-holdable devices include, but are not
limited to, phones, tablets, Personal Digital Assistants (PDAs), cameras,
gaming devices, personal navigation devices, audio players, and
multimedia players. There are millions of mobile hand-holdable electronic
devices in various sizes which are used in the world today.

[0004] Regardless of their size, most mobile hand-holdable electronic
devices include a digital camera system. Digital camera systems
integrated into mobile hand-holdable electronic devices have vastly
improved in both image quality and editing features. The improvements are
such that many mobile hand-holdable electronic devices take photographs
as well as a traditional camera. But unlike traditional cameras, most
mobile hand-holdable electronic devices do not include a receiving port
or a similar coupling that allows the mobile hand-holdable electronic
device to releasably received and retained in a mount. Thus, users often
have to manually hold their mobile device, making it difficult to capture
steady images and/or video. Most mobile hand-holdable electronic devices
also do not include ports or cold shoe mounts suitable for connection to
camera accessories (e.g. external lights, microphones, and the like)
which enhance functionality of the device.

[0005] As such, there are clear needs for a universal mount that can
accommodate differently sized mobile hand-holdable electronic devices.

BRIEF SUMMARY OF THE INVENTION

[0006] Briefly stated, one embodiment of the present invention is directed
to a universal mount able to accommodate mobile hand-holdable electronic
devices of various sizes having a device lower edge spaced from a device
upper edge. The universal mount comprises a housing sub-assembly having a
housing sub-assembly base-plate with a lower mount attached thereto. The
lower mount is configured to releaseably receive the device lower edge. A
movable latch-plate sub-assembly is disposed in and slideably attached to
the housing sub-assembly. The movable latch-plate sub-assembly has an
upper mount attached thereto. The upper mount is aligned with the lower
mount at a position above the lower mount and is configured to
releaseably receive the device upper edge. The position of the upper
mount is adjustable relative to the lower mount to accommodate mobile
hand-holdable electronic devices of various sizes. A support-plate
sub-assembly is fixedly disposed in the housing. The movable latch-plate
sub-assembly is slideably attached to the support-plate sub-assembly. A
back-plate sub-assembly is attached to the housing sub-assembly and
encloses the movable latch-plate sub-assembly and the support-plate
sub-assembly in the housing sub-assembly.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0007] The following detailed description of a preferred embodiment of the
invention will be better understood when read in conjunction with the
appended drawings. For the purpose of illustrating the invention, there
is shown in the drawings an embodiment which is presently preferred. It
should be understood, however, that the invention is not limited to the
precise arrangement and instrumentalities shown.

[0008] In the drawings:

[0009] FIG. 1 is a front isometric view of a preferred embodiment of a
universal mount for a mobile hand-holdable electronic device in
accordance with the present invention;

[0010] FIG. 2 is a front elevation view of the mount of FIG. 1;

[0011] FIG. 3 is a left-side elevation view of the mount of FIG. 1;

[0012] FIG. 4 is a right-side elevation view the mount of FIG. 1;

[0013] FIG. 5 is a back elevation view the mount of FIG. 1;

[0014] FIG. 6 is a top plan view the mount of FIG. 1;

[0015] FIG. 7 is bottom plan view of the mount of FIG. 1;

[0016] FIG. 8 is a partially exploded front isometric view of the mount of
FIG. 1;

[0017] FIG. 9 is a front isometric view of the back-plate sub-assembly of
the mount of FIG. 1;

[0018] FIG. 10 is a right side elevation view of the back-plate
sub-assembly of the mount of FIG. 1;

[0019] FIG. 11 is a front isometrix view of the support-plate sub-assembly
of the mount of FIG. 1;

[0020] FIG. 12 is a front elevation view of support-plate sub-assembly of
the mount of FIG. 1;

[0021] FIG. 13 a left-side elevation view of the support-plate
sub-assembly of the mount of FIG. 1;

[0022] FIG. 14 is a bottom plan view of the support-plate sub-assembly of
the mount of FIG. 1;

[0023] FIG. 15 is a front elevation view of the movable latch-plate
sub-assembly of the mount of FIG. 1;

[0024] FIG. 16 is a back elevation view of the movable latch-plate
sub-assembly of the mount of FIG. 1;

[0025] FIG. 17 is a back isometric view of the movable latch-plate
sub-assembly of the mount of FIG. 1;

[0026] FIG. 18 is bottom plan view of the movable latch-plate sub-assembly
of the mount of FIG. 1;

[0027] FIG. 19 is a front elevation view of the housing sub-assembly of
the mount of FIG. 1;

[0028] FIG. 20 is a back elevation view of the housing sub-assembly of the
mount of FIG. 1;

[0029] FIG. 21 is a cross-sectional elevation view of the mount of FIG. 1
taken along the line B-B of FIG. 6;

[0030] FIG. 22 is a front isometric cross-sectional elevation view of the
mount of FIG. 1 taken along the line A-A of FIG. 1;

[0031] FIG. 23 is a right side elevation view of the pawl of the mount of
FIG. 1; and

[0032] FIG. 24 is front isometric view of the right-side intermediate
mount of the mount of FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION

[0033] Reference will now be made in detail to an embodiment of the
invention, an example of which is illustrated in the accompanying
drawings. The terminology used in the description of the invention herein
is for the purpose of describing the preferred embodiment only and is not
intended to be limiting of the invention.

[0034] As used in the description of the invention and the appended
claims, the singular forms "a", "an" and "the" are intended to include
the plural forms as well, unless the context clearly indicates otherwise.
The words "and/or" as used herein refers to and encompasses any and all
possible combinations of one or more of the associated listed items. The
words "comprises" and/or "comprising," when used in this specification,
specify the presence of stated features, integers, steps, operations,
elements, and/or components, but do not preclude the presence or addition
of one or more other features, integers, steps, operations, elements,
components, and/or groups thereof.

[0035] The words "right," "left," "lower", "upper", `rearward" and
"forward" designate directions in the drawings to which reference is
made. The words "inwardly" and "outwardly" refer to directions toward and
away from, respectively, the geometric center of the embodiment, and
designated parts thereof. The terminology includes the words noted above,
derivatives thereof and words of similar import.

[0036] Although the words first, second, etc., are used herein to describe
various elements, these elements should not be limited by these words.
These words are only used to distinguish one element from another. For
example, a first length could be termed a second length, and, similarly,
a second length could be termed a first length, without departing from
the scope of the present invention.

[0037] The following description is directed towards various embodiments
of the universal mount for a mobile hand-holdable electronic device in
accordance with the present invention.

[0038] Referring to the drawings in detail, where like numerals indicate
like elements throughout, there is shown in FIGS. 1-24 a first preferred
embodiment of a universal mount for a mobile hand-holdable electronic
device, generally designated 10, and hereinafter referred to as the
"mount" 10 in accordance with the present invention. The mount 10
releaseably retains therein a mobile hand-holdable electronic device such
as a tablet computer, cell phone, camera and the like.

[0039] Referring to the exploded front isometric view in FIG. 8, the mount
10 comprises a housing sub-assembly 12 within which a movable-plate
sub-assembly 14 and a support-plate sub-assemble 16 to which the movable
latch-plate sub-assembly 14 is slideably attached are disposed and
enclosed therein by a back-plate sub-assembly 18 attached to the housing
sub-assembly 12.

[0040] Referring to FIGS. 1-8, the housing sub-assembly 12 preferably has
a generally rectangular housing base-plate 20 from which spaced-apart
right (or first) and left (or second) housing side-plates 22, 24 having a
length L.sub.1 extend upwardly to a housing top-plate 26. For mobile
hand-holdable electronic devices, such as cell phones, L.sub.1 may be
between four to eight inches, but could be larger than eight inches or
smaller than four inches. For mobile hand-holdable electronic devices,
such as pads or tablets, L.sub.1 may be between eight to twelve inches
but could be greater than 12 inches or less than eight inches.

[0041] A housing front-plate 28 extending from the right housing
side-plate 22 to the left housing side-plate 24 has a housing front-plate
lower edge 28a spaced from a housing base-plate front lip 30 and extends
upwardly from the housing base-plate 20 a length L.sub.2 terminating in a
housing front-plate upper edge 28b. The remaining front portion of the
housing sub-assembly 12 between the housing top-plate 26 and the housing
front-plate upper edge 28b provides and opening having a length L.sub.3
within which the position of the movable-plate sub-assembly 14 is
adjusted to accommodate mobile hand-holdable electronic devices of
various sizes. The multi-plate housing sub-assembly 12 is preferably
injection molded as a single integrated piece. However, the multi-plate
housing sub-assembly 12 may assembled from individually fabricated pieces
joined together by well known material specific joining methods, such as
adhesive bonding if the fabrication material is a polymeric material,
conventional welding if the fabrication material is a metal of by any
number of well known fasteners. Although the piece-parts comprising the
housing sub-assembly 12 have been referred to as plates, in some
instances, the plates need not be planar and could have a shell-like
curvature.

[0042] The housing base-plate 20 is not limited to a rectangular shape and
in some embodiments may have another geometric shape such as a square or
any other polygon. In some embodiments the right and left housing
base-plate side-walls 32, 34 may be extensions of the lower portion of
the right and left housing side-plates 22, 24. In other embodiments, the
lower portion of the right and left housing side-plates 22 may be
contained within the right and left housing base-plate side-walls 32, 34.

[0043] A lower mount 36 configured to releaseably support and retain a
portion of a lower edge of a mobile hand-holdable electronic device is
fixedly attached to the front portion of the housing base-plate 20
between the housing base-plate front lip 30 and the housing front-plate
lower edge 28a. Preferably, the lower mount 36 has a V-shaped
cross-section compatible with the lower edge of mobile hand-holdable
electronic devices with a wide variety of configurations. In some
embodiments, the lower mount 36 is not fixedly attached to the housing
base-plate 20 and may be replaced by a base-plate tailored to the
configuration of the lower edge of a particular mobile hand-holdable
electronic device.

[0044] Referring to FIGS. 8 and 15-18, the movable latch-plate
sub-assembly 14 includes a movable plate 38 slideably disposed within and
attached to the housing sub-assembly 12 by latch pins 40 (see, FIG. 17)
that extend outwardly from each side of the top portion of the movable
plate 38 and engage slots 42 (see FIG. 8) in the opposed inner surfaces
of the right and left housing side-plates 22, 24 adjacent the opening
above the upper edge 28b of the housing front-plate 28. A cantilevered
brace 44 attached to the top of the movable plate 38 extends forward
through the opening in the housing sub-assembly 12. The brace 44 has a
generally rectangular shape extending the width of the movable plate 38
and has a V-shaped cross section for receiving and fixedly retaining an
upper mount 46 having a configuration compatible with the upper edge of
mobile hand-holdable electronic devices with a wide variety of
configurations. In some embodiments, the upper mount 46 may not be
fixedly attached to the brace 44 and may be replaceable with an upper
mount tailored to the configuration of a particular mobile hand-holdable
electronic device.

[0045] Referring to FIGS. 16-18, 21 and 22, a latch-plate sub-assembly
rail 48 functioning as a rack is positioned along the right edge of the
rearwardly facing surface of the latch-plate sub-assembly 14, extends
rearwardly and has gear teeth 50 on an inwardly facing surface for
engaging a gear wheel 52 (see, FIG. 21). A latch-plate sub-assembly bar
54 functioning as a ratchet bar is spaced from the left edge of the
rearwardly facing surface of the latch-plate sub-assembly 14, extends
rearwardly and has serrated teeth 56 on an outwardly facing surface for
engaging a pawl 58 (See, FIGS. 21-23) permitting movement of the movable
latch-plate sub-assembly 14 in one direction and preventing movement in
the opposite direction.

[0046] A movable latch-plate sub-assembly channel 60 between the rail 48
and the bar 54 is centrally positioned on the rearwardly facing surface
of the latch-plate sub-assembly 14. A rod 62 extending substantially the
length of the latch-plate sub-assembly channel 60 terminates in an open
end 62a configured to receive one end of a movable latch-plate
sub-assembly compression spring 64 (See, FIGS. 21 and 22) The other end
of the latch-plate sub-assembly compression spring 64 is attached to and
supported by the housing base plate 20.

[0047] Referring to FIGS. 8, 11-14, 21 and 22, the support-plate
sub-assembly 16 is operatively coupled to the movable latch-plate
sub-assembly 14 by (i) the support-plate sub-assembly gear wheel 52
rotatably mounted on a inwardly extending support-plate sub-assembly
shaft 66 on the forwardly facing surface of the support-plate
sub-assembly 16 and which engages the rail 48 on the rearwardly facing
surface of the latch-plate sub-assembly 14, (ii) the support-plate
sub-assembly pawl 58 which engages the ratchet bar 54 on the rearwardly
facing surface of the latch-plate sub-assembly 14, and (iii) a
support-plate sub-assembly channel 68 within which the latch-plate
sub-assembly channel 60 is movable. The movable latch-plate sub-assembly
14 compression spring 64 upwardly biases the upper mount 46 away from the
lower mount 36.

[0048] Referring to FIGS. 8 and 21-23, the pawl 58 comprises a pivoting
catch 70 having an catch edge 72 at one end configured and positioned to
engage the serrated teeth 56 of the ratchet bar 54 and a pawl release
button 74 at the other end. Pawl pins 76 extending from opposite sides of
the pivoting catch 70 are received and pivotably retained in sockets (not
shown) in the inwardly facing surface of the housing front plate 28 and
the opposed inwardly facing surface of the support-plate sub-assembly 16.
A ratchet pawl compression spring (not shown) extends between a cradle 82
and the release button 74 biasing the pawl 58 in the ratchet bar 54
engaging position such that pressing of the release button 74 disengages
the catch edge 72 from the serrated teeth 56 of the ratchet bar 54
allowing movable latch-plate sub-assembly compression spring 64 to
expand, thereby moving the upper mount 44 upwardly and away from the
lower mount 36. The pawl 58 may be locked in place by a slideable locking
pin 80

[0049] Referring to FIGS. 1-4, 8 and 24, mount 10 may have an intermediate
mount 84 positioned on the housing sub-assembly 12 between the lower
mount 36 and the upper mount 44 to allow mobile hand-holdable electronic
devices with small frames to be reliably received and releasably retained
in the mount 10. The intermediate mount 84 comprises a pair of pivotable
arms 86 stowed in recesses 88 in the right and left housing side plates
22, 24. Each pivotable arm 86 has a pivotable arm pin 90 with a
collapsible tip allowing the pivotable arm pin 90 to be inserted in an
arm hole 92 in the right and left recesses 90 such that upon insertion in
the arm hole 92, the tip is first compressed and then expands providing a
snap fit pivotably attaching the pivot arm 86 to the right or left
side-plate 22, 24. In some embodiments, each pivotable arm 86 may be
pivotably attached to the to the right and left side-plates 22, 24 by a
threaded pivotable arm pin screwably inserted in each arm hole 92. The
total range of travel of the pair of pivotable arms 86 is about 90
degrees. At zero degrees, the pivot arms 86 are stowed in the recesses 88
in the right and left housing side plates 22, 24 and held in the stowed
position by the reverse angle feature of the pivotable arms 86 in
conjunction with a similar reverse angle feature of the recesses 88. In
some embodiments, a finger nail slot may be provided as a feature between
the pivotable arms 86 and the housing right and left side plates and the
housing front plate 28.

[0050] Referring to FIGS. 1 and 2, in some embodiments of the mount 10,
the housing sub-assembly 12 may have a cold shoe mount 90 on one or more
housing sub-assembly side and top plates 22, 24, 26 for mounting
peripheral devices (e.g. external lights, microphones, and the like)
which enhance the functionality of the mobile device.

[0051] As stated above for the housing sub-assembly 12, the several
sub-assemblies described above are preferably fabricated by well known
injection molding processes from compatible polymeric materials. However,
the fabrication materials are not limited to polymerics. Other materials
such as various metals or carbon fiber composites could be used.

[0052] A preferred method for assembling the mount 10 includes as a first
step, placing the housing sub-assembly with the housing sub-assembly 12
front plate 28 facing downwardly on a flat surface. The movable-plate
sub-assembly 14 is inserted into the front of the housing sub-assembly 12
such that the latch pins 38 extending outwardly from each side of the top
portion of the movable plate 36 are slideably disposed in the slots 40 in
the opposed inner surfaces of the right and left housing side-plated 22,
24 and the upper mount 46 extends past the housing front-plate 28 The
movably latch-plate sub-assembly compression spring 64 is installed by
sliding the spring 64 over the open end of the rod 62, making sure that
both ends of the spring 64 are properly seated at their interface with
the rod 62 and the housing base plate 20 and that the body of the spring
64 is located properly in the movable latch-plate sub-assembly channel
60. The gear wheel 52 is now installed on the inwardly extending shaft 66
of the forwardly facing surface of the support-plate sub-assembly 16. The
ratcheting pawl 58 and compression spring (not shown) are installed on
the inwardly extending shaft 66 of the forwardly facing surface of the
support-plate sub-assembly 16 such that one end of the compression spring
(not shown) is seated in the compression spring cradle 82 and the other
end is seated in the pawl release button 74. Damping grease is applied to
both the gear wheel 52 and the ratcheting pawl 58 to hold the components
in place while installing the support-plate sub-assembly 16 is installed
on the movable latch-plate sub-assembly 14 in the housing sub-assembly 12
making sure that the pivoting catch pivot pins 76 are inserted in the
pivot pin sockets (not shown) in both the housing sub-assembly 12 and the
support-plate sub-assembly 16. The support-plate sub-assembly 16 is now
attached to the house sub-assembly 12 by threaded fasteners. In some
embodiments, the support-plate sub-assembly 16 may be additionally
attached to the house sub-assembly 12 by dovetail joints, adhesive bonds
or other well known joining methods.

[0053] Referring to FIGS. 8-10, the housing back-plate sub-assembly 18 has
a generally rectangular shell like shape with inwardly extending flat
head studs 98 positioned at each corner of the housing back-plate
sub-assembly 18 for insertion in keyholes 100 in the support-plate
sub-assembly 16 in register with the flat head studs 98 which upon
insertion in the keyholes 100 and the upward sliding of the housing
back-plate sub-assembly 18 relative to the support-plate sub-assembly 16
locks the two sub-assemblies 16, 18 together, enclosing the house
sub-assembly 12.

[0054] It will be appreciated by those skilled in the art that changes
could be made to the embodiment described above without departing from
the presently-disclosed invention. It is understood, therefore, that this
invention is not limited to the particular embodiment disclosed, but it
is intended to cover modifications within the spirit and scope of the
present invention as defined by the appended claim.